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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Items Measured at Fair Value on Recurring Basis (Details) - Fair Value, Measurements, Recurring $ in Millions | Mar. 31, 2018 USD ($)
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Deferred Compensation Plan Assets | $ 35.3
Deferred Compensation Plan Liability | (35.3)
Total | 0.0
Quoted Prices in Active Markets for Identical Assets (Level 1) |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Deferred Compensation Plan Assets | 35.3
Deferred Compensation Plan Liability | 0.0
Total | 35.3
Significant Other Observable Inputs (Level 2) |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Deferred Compensation Plan Assets | 0.0
Deferred Compensation Plan Liability | (35.3)
Total | (35.3)
Significant Unobservable Inputs (Level 3) |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |
Deferred Compensation Plan Assets | 0.0
Deferred Compensation Plan Liability | 0.0
Total | $ 0.0

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- Definition This element represents the aggregate of the assets and liability reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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- Definition Represents the deferred compensation plan assets, fair value disclosure as of reporting period. + References No definition available. + Details
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- Definition Represents the deferred compensation plan liabilities, fair value disclosure as of reporting period. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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